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Chemical bonding - Coggle Diagram
Chemical bonding
chemical bond
the force of attraction between any 2 atoms in a molecule to attain stability
methods to attain stable configuration
the transfer of 1 or more electrons to form electrovalent bond
sharing 1, 2 or more electrons to form covalent bond
when shared pairs of electrons are contributed by one combining atoms the bond formed is coordinate bond
a metallic atom which losses to form +ve charged ion is known as
anion
atom to lose electron to form electropositive element
electronegative
non - metallic element redily accepts electron to form -ve charged ion
conditions for the formation of ionic bond
low ionisation energy
if ionisation potential of an atom is low it will lose electron easily to form cation
high electron affinity
if electron affinity is high anion will be formed
large electro -ve difference
if difference between 2 elements is high then transfer of electrons will be easy
Example
Nacl ,CaO and Mg Cl2
Electrovalent compounds
Nature
they are hard solids consisting of ions
boiling point and melting point
high boling and melting point
Conductors
they do not conduct electricity in solid state but are good conductors in solid state
dissociation
electrovalent compounds are good conductors of heat
solubility
these are soluble in water but insoluble in organic solution